1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
/*
* Mesa 3-D graphics library
* Version: 6.5.1
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file texformat.h
* Texture formats definitions.
*
* \author Gareth Hughes
*/
#ifndef TEXFORMAT_H
#define TEXFORMAT_H
#include "mtypes.h"
/**
* Mesa internal texture image formats.
* All texture images are stored in one of these formats.
*
* NOTE: when you add a new format, be sure to update the do_row()
* function in texstore.c used for auto mipmap generation.
*/
enum _format {
/**
* \name Hardware-friendly formats.
*
* Drivers can override the default formats and convert texture images to
* one of these as required. The driver's
* dd_function_table::ChooseTextureFormat function will choose one of these
* formats.
*
* \note In the default case, some of these formats will be duplicates of
* the generic formats listed below. However, these formats guarantee their
* internal component sizes, while GLchan may vary between GLubyte, GLushort
* and GLfloat.
*/
/*@{*/
/* msb <------ TEXEL BITS -----------> lsb */
/* ---- ---- ---- ---- ---- ---- ---- ---- */
MESA_FORMAT_RGBA8888, /* RRRR RRRR GGGG GGGG BBBB BBBB AAAA AAAA */
MESA_FORMAT_RGBA8888_REV, /* AAAA AAAA BBBB BBBB GGGG GGGG RRRR RRRR */
MESA_FORMAT_ARGB8888, /* AAAA AAAA RRRR RRRR GGGG GGGG BBBB BBBB */
MESA_FORMAT_ARGB8888_REV, /* BBBB BBBB GGGG GGGG RRRR RRRR AAAA AAAA */
MESA_FORMAT_RGB888, /* RRRR RRRR GGGG GGGG BBBB BBBB */
MESA_FORMAT_BGR888, /* BBBB BBBB GGGG GGGG RRRR RRRR */
MESA_FORMAT_RGB565, /* RRRR RGGG GGGB BBBB */
MESA_FORMAT_RGB565_REV, /* GGGB BBBB RRRR RGGG */
MESA_FORMAT_ARGB4444, /* AAAA RRRR GGGG BBBB */
MESA_FORMAT_ARGB4444_REV, /* GGGG BBBB AAAA RRRR */
MESA_FORMAT_ARGB1555, /* ARRR RRGG GGGB BBBB */
MESA_FORMAT_ARGB1555_REV, /* GGGB BBBB ARRR RRGG */
MESA_FORMAT_AL88, /* AAAA AAAA LLLL LLLL */
MESA_FORMAT_AL88_REV, /* LLLL LLLL AAAA AAAA */
MESA_FORMAT_RGB332, /* RRRG GGBB */
MESA_FORMAT_A8, /* AAAA AAAA */
MESA_FORMAT_L8, /* LLLL LLLL */
MESA_FORMAT_I8, /* IIII IIII */
MESA_FORMAT_CI8, /* CCCC CCCC */
MESA_FORMAT_YCBCR, /* YYYY YYYY UorV UorV */
MESA_FORMAT_YCBCR_REV, /* UorV UorV YYYY YYYY */
MESA_FORMAT_Z24_S8, /* ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ SSSS SSSS */
MESA_FORMAT_S8_Z24, /* SSSS SSSS ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ */
MESA_FORMAT_Z16, /* ZZZZ ZZZZ ZZZZ ZZZZ */
MESA_FORMAT_Z32, /* ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ */
/*@}*/
#if FEATURE_EXT_texture_sRGB
/**
* \name 8-bit/channel sRGB formats
*/
/*@{*/
MESA_FORMAT_SRGB8,
MESA_FORMAT_SRGBA8,
MESA_FORMAT_SL8,
MESA_FORMAT_SLA8,
MESA_FORMAT_SRGB_DXT1,
/*@}*/
#endif
/**
* \name Compressed texture formats.
*/
/*@{*/
MESA_FORMAT_RGB_FXT1,
MESA_FORMAT_RGBA_FXT1,
MESA_FORMAT_RGB_DXT1,
MESA_FORMAT_RGBA_DXT1,
MESA_FORMAT_RGBA_DXT3,
MESA_FORMAT_RGBA_DXT5,
/*@}*/
/**
* \name Generic GLchan-based formats.
*
* Software-oriented texture formats. Texels are arrays of GLchan
* values so there are no byte order issues.
*
* \note Because these are based on the GLchan data type, one cannot assume
* 8 bits per channel with these formats. If you require GLubyte channels,
* use one of the hardware formats above.
*/
/*@{*/
MESA_FORMAT_RGBA,
MESA_FORMAT_RGB,
MESA_FORMAT_ALPHA,
MESA_FORMAT_LUMINANCE,
MESA_FORMAT_LUMINANCE_ALPHA,
MESA_FORMAT_INTENSITY,
/*@}*/
/**
* \name Floating point texture formats.
*/
/*@{*/
MESA_FORMAT_RGBA_FLOAT32,
MESA_FORMAT_RGBA_FLOAT16,
MESA_FORMAT_RGB_FLOAT32,
MESA_FORMAT_RGB_FLOAT16,
MESA_FORMAT_ALPHA_FLOAT32,
MESA_FORMAT_ALPHA_FLOAT16,
MESA_FORMAT_LUMINANCE_FLOAT32,
MESA_FORMAT_LUMINANCE_FLOAT16,
MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
MESA_FORMAT_INTENSITY_FLOAT32,
MESA_FORMAT_INTENSITY_FLOAT16
/*@}*/
};
/** GLchan-valued formats */
/*@{*/
extern const struct gl_texture_format _mesa_texformat_rgba;
extern const struct gl_texture_format _mesa_texformat_rgb;
extern const struct gl_texture_format _mesa_texformat_alpha;
extern const struct gl_texture_format _mesa_texformat_luminance;
extern const struct gl_texture_format _mesa_texformat_luminance_alpha;
extern const struct gl_texture_format _mesa_texformat_intensity;
/*@}*/
#if FEATURE_EXT_texture_sRGB
/** sRGB (nonlinear) formats */
/*@{*/
extern const struct gl_texture_format _mesa_texformat_srgb8;
extern const struct gl_texture_format _mesa_texformat_srgba8;
extern const struct gl_texture_format _mesa_texformat_sl8;
extern const struct gl_texture_format _mesa_texformat_sla8;
extern const struct gl_texture_format _mesa_texformat_srgb_dxt1;
/*@}*/
#endif
/** Floating point texture formats */
/*@{*/
extern const struct gl_texture_format _mesa_texformat_rgba_float32;
extern const struct gl_texture_format _mesa_texformat_rgba_float16;
extern const struct gl_texture_format _mesa_texformat_rgb_float32;
extern const struct gl_texture_format _mesa_texformat_rgb_float16;
extern const struct gl_texture_format _mesa_texformat_alpha_float32;
extern const struct gl_texture_format _mesa_texformat_alpha_float16;
extern const struct gl_texture_format _mesa_texformat_luminance_float32;
extern const struct gl_texture_format _mesa_texformat_luminance_float16;
extern const struct gl_texture_format _mesa_texformat_luminance_alpha_float32;
extern const struct gl_texture_format _mesa_texformat_luminance_alpha_float16;
extern const struct gl_texture_format _mesa_texformat_intensity_float32;
extern const struct gl_texture_format _mesa_texformat_intensity_float16;
/*@}*/
/** \name Assorted hardware-friendly formats */
/*@{*/
extern const struct gl_texture_format _mesa_texformat_rgba8888;
extern const struct gl_texture_format _mesa_texformat_rgba8888_rev;
extern const struct gl_texture_format _mesa_texformat_argb8888;
extern const struct gl_texture_format _mesa_texformat_argb8888_rev;
extern const struct gl_texture_format _mesa_texformat_rgb888;
extern const struct gl_texture_format _mesa_texformat_bgr888;
extern const struct gl_texture_format _mesa_texformat_rgb565;
extern const struct gl_texture_format _mesa_texformat_rgb565_rev;
extern const struct gl_texture_format _mesa_texformat_argb4444;
extern const struct gl_texture_format _mesa_texformat_argb4444_rev;
extern const struct gl_texture_format _mesa_texformat_argb1555;
extern const struct gl_texture_format _mesa_texformat_argb1555_rev;
extern const struct gl_texture_format _mesa_texformat_al88;
extern const struct gl_texture_format _mesa_texformat_al88_rev;
extern const struct gl_texture_format _mesa_texformat_rgb332;
extern const struct gl_texture_format _mesa_texformat_a8;
extern const struct gl_texture_format _mesa_texformat_l8;
extern const struct gl_texture_format _mesa_texformat_i8;
extern const struct gl_texture_format _mesa_texformat_ci8;
extern const struct gl_texture_format _mesa_texformat_z24_s8;
extern const struct gl_texture_format _mesa_texformat_s8_z24;
extern const struct gl_texture_format _mesa_texformat_z16;
extern const struct gl_texture_format _mesa_texformat_z32;
/*@}*/
/** \name YCbCr formats */
/*@{*/
extern const struct gl_texture_format _mesa_texformat_ycbcr;
extern const struct gl_texture_format _mesa_texformat_ycbcr_rev;
/*@}*/
/** \name Compressed formats */
/*@{*/
extern const struct gl_texture_format _mesa_texformat_rgb_fxt1;
extern const struct gl_texture_format _mesa_texformat_rgba_fxt1;
extern const struct gl_texture_format _mesa_texformat_rgb_dxt1;
extern const struct gl_texture_format _mesa_texformat_rgba_dxt1;
extern const struct gl_texture_format _mesa_texformat_rgba_dxt3;
extern const struct gl_texture_format _mesa_texformat_rgba_dxt5;
/*@}*/
/** \name The null format */
/*@{*/
extern const struct gl_texture_format _mesa_null_texformat;
/*@}*/
extern const struct gl_texture_format *
_mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
GLenum format, GLenum type );
extern void
_mesa_format_to_type_and_comps(const struct gl_texture_format *format,
GLenum *datatype, GLuint *comps);
#endif
|
